ArticleMicrobial ecology2021
Investigation of On-Farm Transmission Routes for Contamination of Dairy Cows with Top 7 Escherichia coli O-Serogroups.
Article in Microbial ecology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 19 citations in OpenAlex.
- Extended-Spectrum Beta-Lactamase (ESBL)-Producing E. coli in Livestock and Free-Roaming Wildlife: A Combined Phenotyping-Whole-Genome Sequencing One Health Approach.Transboundary and emerging diseases · 2026Article
- Virulence genes, antimicrobial resistance profiles and phylogroups of Shiga toxin-producing Escherichia coli and atypical enteropathogenic Escherichia coli isolates from dairy cattle in South Africa.World journal of microbiology & biotechnology · 2025Article
- Ruminant-dense environments increase risk of reported Shiga toxin-producingApplied and environmental microbiology · 2025Article
- Article
- Shiga toxin-producingFrontiers in microbiology · 2025Article
- Ruminant-dense environments increase risk of Shiga toxin-producingmedRxiv : the preprint server for health sciences · 2024Article
- Medium-term storage of calf beddings affects bacterial community and effectiveness to inactivate zoonotic bacteria.PloS one · 2023Article
- Risk factors of Shiga toxin-producingEpidemiology and infection · 2022Article
- F Plasmid Lineages in Escherichia coli ST95: Implications for Host Range, Antibiotic Resistance, and Zoonoses.mSystems · 2022Article
- Advanced molecular characterization of enteropathogenicVeterinary world · 2021Article
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Shiga toxin-producing Escherichia coli (STEC) are foodborne bacterial pathogens, with cattle a significant reservoir for human infection. This study evaluated environmental reservoirs, intermediate hosts and key pathways that could drive the presence of Top 7 STEC (O157:H7, O26, O45, O103, O111, O121 and O145) on pasture-based dairy herds, using molecular and culture-based methods. A total of 235 composite environmental samples (including soil, bedding, pasture, stock drinking water, bird droppings and flies and faecal samples of dairy animals) were collected from two dairy farms, with four sampling events on each farm. Molecular detection revealed O26, O45, O103 and O121 as the most common O-serogroups, with the greatest occurrence in dairy animal faeces (> 91%), environments freshly contaminated with faeces (> 73%) and birds and flies (> 71%). STEC (79 isolates) were a minor population within the target O-serogroups in all sample types but were widespread in the farm environment in the summer samplings. Phylogenetic analysis of whole genome sequence data targeting single nucleotide polymorphisms revealed the presence of several clonal strains on a farm; a single STEC clonal strain could be found in several sample types concurrently, indicating the existence of more than one possible route for transmission to dairy animals and a high rate of transmission of STEC between dairy animals and wildlife. Overall, the findings improved the understanding of the ecology of the Top 7 STEC in open farm environments, which is required to develop on-farm intervention strategies controlling these zoonoses.
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